The transcontinental railroad was a key role in the industrial revolution because it was the only way for supplies to get from one part of the country to the other. The train was also the fastest mode of transportation at the time so it was also important for travel. I hope this helped.
The Bush Doctrine of the early 2000's can be best described as idealism and unilateralism. At the time, the <span>United States became engaged in policies across the globe that were driven by neoconservative ideology.</span>
The constitution explicitly assigns the president the power to sign or veto legislation, command the armed forces, ask for the written opinion of their cabinet, convene or adjourn congress, grant reprieves and pardons, and receive ambassadors.